Sash-lock.



PATENTED MAY. a, 1906.

R .D.L'OGAN.

SASH LOOK. APPLICATION FILED JULY 20,1905.

i fizzzezzifix UNITED s'rA'rEs PATENT OFFICE.

SASH-LOCK- Specification of Letters Patent.

Patented May 8, 1906.

Application filed July 20, 1905. Serial No- 270,455.

To all whom may concern:

Be it known that I, RICHARD D. LOGAN, a citizen of the United States, resiring in the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Sash-Locks, of which the folowing is a full, clear, and exact description, reference being had to the accom anying drawings, forming part of this speci cation.

My invention relates to a sash-lock for permitting the sashes of a window to be partially opened and restricted from being completely opened, so that ventilation may be secured without danger of an intruder gaining access through the window. The lock is so constructed as to permit of the locked sashes being raised and lowered to limited degrees, this being due to the sashes having in their stiles grooves into which the lock members enter to restr'ctthe movement of the sashes. The grooves in the stiles of the sashes with which my lock is used are so formed as to permit of the sashes being entirely disengaged from the lock members only when the sashes are closed in order that the sashes may be fully opened and closed when the lock is manipulated to withdraw it from the sash-stiles.

Figure I is a perspective view of a win iow with the sashes therein in partially-open positions and my lock applied to the win ow.

Fig. II is a vertical section taken through the g i window-frame with the sashes shown in edge elevation and the free finger ends of the lock members illustrated in cross-section and seated in the grooves of the sashes provided for their reception. Fig. III is a front elevation of the parts as seen in Figs. I and II with portions of the sash-frame and the lower sash in section. Fig. IV is an inside View of a fragment of the window-frame, fragments of the sashes in said frame, and the fingers of the lock members. Fig. V is a horizontal the Window when said sash is in closed position.

3 designates the lower sash, and 4 the up per sash. The stile of the lower sash, which operates in the proper runway of the frame side 1, is provided at its upper end with a vertical groove 3, 0 on at the upper end of the stile and extending downwardly therein to a depth corresponding to the degree that it may be desired to open the sash for the purpose of ventilation and restrain it in such position against further upward movement. The stile of the upper sash, which operates in the proper runway of the frame side 1, vided at its lower end with a groove 4 for the reception of the lockin member that is to restrict the movement 0 said sash, and at the side of said stile facing the grooved stile of the lower sash is a notch The groove 1 extends upwardly in the sash-stile in which it is made to a degree corresponding to degree that it may be desired to permit lowering of the upper sash and restrict it from further downward movement for the purpose of providing ventilation through the space above said sash.

5 and 6 designate lock-bars pivotally secured to a bracket 7, secured to the windowframe side 1, as seen in Figs. I and III. The upper free ends of the lock-bars 5 and 6 are provided with fingers 5 and 6, extendin laterally from the bodies of the bars throug the slots 2 in the window-frame side and into the sash-runways.

8 designates a pull-bar pivoted to the lockbars 5 and 6 and extending forwardly therefrom to the front of the window-frame, the said bar being provided at its forward end with a handle 9. having one end fixed to the rear end of the pull-bar 8 and having its other end held. from movement at 12. (See Fig. V.) This re tractile spring serves to draw the pull-bar 8 11 is a retractile spring is prothe section taken on line V V, Fig. IV. Fig. VI is an inside face'view of fragments of the window-frame and the lower sash with the finger of the lock-bar corresponding to this sash shown in the position assumed when the sash is in closed position.

1 and 1 designate the sides of a windowframe having the usual sash-runways for lower and upper sashes. In the frame side 1 rearwardly and move the lock-bars 5 and 6 in a corresponding direction whensaid pull-bar is freed of restraint. In the practical use of my sash-lock the operation is as follows: When the lock-bars 5 and 6 are in their rearmost positions in which they are held under the action of the spring 1 1, the fingers 5 and 6 are maintained in the positions seen in full lines, Figs. I to V, incluis a pair of horizontal slots 2, that are located sive, so that they will be received by the to that occugrooves 4 and 4 of the sashes 3 and 4. With at an elevation corresponding 55 pied by the top surface of the lower sash of i the lock-bar fingers in such positions the le- 11o ver-sash may be raised and the upper sash lowered to the degree permitted by the travel of the lock-bar fingers in the sash stile grooves, as seen most clearly in Figs. II and III, and when the sashes have been so moved the lock-bar fingers by striking against the ends of the grooves serve to prevent further movement of the sashes. Owing to the lower rail of the upper sash extending to a lower elevation than the surface of the upper rail of the lower sash, the notch 4 is formed in the stile of the upper sash to permit entrance of the loc'lebar finger 6 into the sash-stile groovefi on the same level as the lock-bar finger 5 moves above the lower sash to enter into the sash-stile groove 3. When it is desired tofree' the window-sashes, so they may be raised and lowered at will to the full extent, the lock-bars are drawn forwardly to their greatest degree of travel while the sashesare in closed condition, and the fingers of the lock-bars are thereby placed in front of the sashes, so that they will not interfere with the movements of the sashes in raising and lowering them to the fullest degree of their travel.

n conclusion I wish to point out particularly' the meritorious features in my sashlock. The lock is entirely invisible, with the exception of the handle of the pull-bar 8. The lock cannot be operated except when both of the window-sashes are closed, and therefore it cannot be tampered with by any one at the outside of the window. The lock operates automatically through the medium of the spring 11, that controls the pull-bar 8 and by which the lock-bars 5 and 6 are moved to engage in the grooves in the sashstile's' when the sashes are closed after they have been completely opened. It is not the intention that either of the sashes controlled by my lock shall be rendered immovable; but the lock serves to hold the sashes from more than a limited degree of movement, such as will permit of ventilation being secured without any liability of an intruder gaining access to the window. When it is desired to move the sashes into more open positions than that permitted by the lock, the sashes are readily freed by moving the lock-bars 5 and 6 to withdraw the lock-bar fingers from positions in alinement with the grooves in the sashstiles. This is accomplished while the sashes are in closed position, and the lockbars being held out of alinement with the stile-grooves until the sashes have been slightly moved will be maintained out of the grooves to permit full movement of the sashes.

I claim as my invention 1. The combination with a window-framev and lower and upper sashes therein having grooves in their stiles, of a pair of rockable lock-bars arranged parallel to each other and adapted to enter the grooves in said stiles, the grooves in the upper sash being located on the lower end of the stiles, and the grooves in the lower sash being located on the upper end of the stiles, substantially as set forth.

2. The combination with a window-frame and lower and upper sashes therein having grooves in their stiles, of a pair of spring-controlled rockable lock-bars arranged parallel to each other and adapted to enter the grooves in the stiles of said sashes, the grooves in the upper sash being located .on the lower end of the stiles, and the grooves in the lower sash being located on the upper end of the stiles, substantially as set forth.

3. The combination with a window-frame, and lower and upper sashes therein having grooves in their stiles, of a pair of rockable lock-bars arranged parallel to each other and adapted to enter the grooves in the stiles of said sashes,and a pull-bar connected to said lock-bars, the grooves in the upper sash being located on the lower end of the stiles, and the grooves in the lower sash being located on the upper end of the stiles, substantially as set forth.

4. The combination with a window-frame and lower and upper sashes therein having grooves in their stiles, of a pair of rockable lock-bars arranged parallel to each other and adapted to enter the grooves in the stiles of said sashes, a pull-bar connected to said lockbars, and a retractable spring connected to said pull-bar, substantially as set forth.

5. The combination with a window-irame and lower and up er sashes therein having grooves in their sti es, of a pair of pivotallysupported lock-bars having fingers at their free ends arranged to enter the grooves in said stiles, a pull-bar connected to said lockbar, and a controlling s ring connected to said pull-bar, substantial y as set forth.

RICHARD D. LOGAN.

In presence of- R. M. BURCH, O. F FOSTER. 

